Electron and Muon $g-2$ Constraints on Light Vector Bosons: Dark Photons and the $X_{17}$ Boson
We combine the current experimental muon $g-2$ world average, which incorporates the final Fermilab result, with the latest electron $g-2$ determinations based on cesium and rubidium measurements to set 95\% CL exclusion contours for a pure vector mediator coupled to leptons. We explicitly test the assumption that the...